Brick-mold-sanding machine



(No Model.)

- H. & G. MARTIN.

BRICK MOLD SANDING MAGHINE.

Patented Mar. 15, 1887.

@J 6 M. w W.

N. PEYERS. Phom'ulho n mr, washinpo'n, u C.

NITED STATES PATENT OFFICE.

HENRY MARTIN, OF LANCASTER, AND GEORGE MARTIN, OF PHILADELPHIA,PENNSYLVANIA BRlCK-MOLD-SANDING MACHINE.

fiPECIPICATION forming part of Letters Patent No. 359,267, dated March15. 1887.

Application filed Mayfli, 1886. Serial No. 202,845. (No model.)

To aZZ whom it may concern.-

Be it known that we, HENRY MARTIN, residing at Lancaster city, in thecounty of Lancaster and State of Pennsylvania, and GEORGE MARTIN,residing at Philadelphia,in the county of Philadelphia and State ofPennsylvania, both citizens of the United States, have invented certainnew and useful Improvements in Brick-Mold-Sanding Machines; and we do 1hereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

Our invention relates to that class of brick- 1 mold-sanding machines inwhich a rotating cylinder is used to contain the sand,with openings atvarious places on its periphery over which the molds are fastened, sothat the action of revolving the cylinder will throw the sand from oneset of molds into the other, and

by this movement put them in proper condition to receive the clay, atthe same time economizing the use of the sand and preventing the samefrom getting on the outside of the .25 molds, which all brickmakers knowsaves the machine.

The object of our improvements are, first, the construction of ahexagonal cylinder in which there are three open and three solid sidesalternately, so that when the molds are fastened to the open sides thereis always a solid side directly opposite; second. to construct a set ofadjustable automatic leverclamps to hold the molds fast onto the open 5sides of the hexagonal cylinder; third, to construct a suitableroller-cam, and guide device to hold the levers in their properposition. We attain these objects by the mechanism illustrated in thefollowing drawings, in which 0 Figure 1 is a full perspective elevationof the machine. Fig. 2 is a full side sectional elevation, and Fig. 3 afull perspective end elevation of the same.

Similar letters refer to similar parts through the several views.

Fig. 1: A represents a suitable frame to sup port this device; B, themold in position on the cylinder, and 0 one of the flat sides of thesame. D represents the cylinder itself; 6 e,

the supports for the roller-cam; f. the guide device for holding thelower levers in position; 9 one of the leverclamps, and h the springwhich throws the clamp onto the mold when released by the cam.

In the sectional side elevion in Fig. 2, k 5 represents the bearings forthe shaft; Z, the shafts upon which the cylinder is keyed fast;

t, the cams; m, the rollers upon which the cams act tothrow theadjustable lever-clamps y off the mold B when in the upper position, 6;as shown in Fig. 2, and 0 the adjustable part of the lever, which makesthis clamp the required length to suit any thickness of molds.

In the end view, Fig. 3, the levers g and g are shown. The twolowerones, 9, are held 6 5 in place agains t the end of the cylinder, when inthis position, by means of the guide-bar f, and the upper one, g,isthrown off of the molds by means of the cam 1' operating on the rollersm, which are journaled fast to the ends 0 of the lever-clampsg and 9.

Having thus described our invention, the manner of working it is asfollows: The molds are placed on the open space of the sandingmachine,and the lever-clamps are adj usted'to suit their thickness by means ofthe bolt and loose jaw o. This jaw and lever both have oblong holesthrough them where the bolt goes in, so that they can be drawn in andout to suit the molds, as shown in Fig. 2. \Vhen this is done, and thetwo molds are turned in the direction of the arrow to the positions aand a Fig. 3, the machine is 'in position to receive the sand. It willbe observed that by the box shape of the cylinder, directly under themold B, at a, is presented one of the flat sides of the cylinder. Theobject of this is to support the weight of the sand and not allow it tolie in the molds in the position that they are in at a and a which is atrest, while the oper- 9o ator replaces the mold B a with another, as itis a well-known fact that if the sand is allowed to lie in the molds forany time at rest more than is required is sure to stick to the inside ofthem. As the molds are placed in 5 position at a, the operator, indrawing the machine toward him in the direction of the arrow, throws theroller m in on the end of the leverclannp out of contact with cam i,thus allowing the spring h, Fig. 2, to throw the adjusted roolever-clamp onto the end of the mold on both ends at the same time andhold it rigidly in position. At one-twelfth of the revolution the end ofthis lever-clamp comes in contact with the guide-barf, which holds itfirmly on the molds, as at a Fig. 3. This bar continues to hold it inposition until it is past the point occupied by the mold a It thenreleases the lever-clamp just before the roller m comes in contact withthe point of the cam i. It is this part of the cam which drives theroller down and compresses the spring h, and throws the lever-clamps inthe position that is shown at g, Fig. 2, thus releasing the mold B,which is then removed and replaced by another, andso the operatorcontinues.

The machine being entirely automatic in its action, it is only necessaryfor the operator to take one mold off, put another on, and turn themachine either to the right or left, so as to bring one of thealready-sanded molds on top in position to toe-changed for another, andas the cylinder constructed in this manner is at all times balanced bythe weight of the molds, a boy can easily work it instead of a man, andit can be run by power, if so desired.

We are aware that prior to our invention cylinders have been made forthis purpose.

Therefore we do not claim the eylinders,broadlybut That we do claim asour invention, and desire to secure by Letters Patent, is

1. In combination with. the cylinder and pivoted lever-clamps forholding the molds in place, the springs 71, which act against saidlever-clamps to cause this holding action, substantially as set forth.

2. The lever-clamps 9, provided with extensihle plates 0, making saidlever-clamps adjustable, in combination with a brick-ho1ding cylinder,substantially as set forth.

3. A brick-holding cylinder,in combination with lever-clamps for holdingthe brick-molds, guide-barf, which holds said clamp against said moldsduring a part of the revolution, and the independent cams a, arranged towithdraw said lever-clamps from said molds, substantially as set forth.

In testimony whereof we affix our signatures in presence oftwowitncsses.

HENRY MARTIN. GEORGE MARTIN. Witnesses:

A. F. SHENoK, I. B. I-lENDERsoN.

